Lecture 1 Flashcards
(15 cards)
1
Q
Diversity
A
The variety of life
2
Q
Eukaryote
A
an organism whose cells contain a nucleus within a membrane
3
Q
Heterotroph
A
- cannot make its own food
- must consume other organisms for energy
4
Q
Autotroph
A
- organism that can produce its own food
- uses light, water, carbon dioxide, other chemicals
5
Q
what are the traits of an Animal
A
- multicellular
- eukaryotic
- heterotrophic
- most (not all) able to move
6
Q
The first suggestions of early evolutionary thought came from who?
A
Early Greek philosophers (e.g. Aristotle)
7
Q
Lamarckism
A
- The theory that organisms pass on physical traits to their offspring that they acquired during their lifetime
- inheritance of acquired characteristics
8
Q
what is Darwinian evolutionary theory
A
- natural selection
- over many generations, this process can create new adaptations and species
9
Q
Fossil
A
A remnant of life that once lived that is found in the Earth’s crust
10
Q
Fossil Record
A
- largely incomplete
- collection of all fossils that document the history of life on Earth
11
Q
Geological time
A
the history of Earth divided based on layers of sedimentary rock
12
Q
Geological time - divisions
A
- Eons
- Eras
- Periods
- Epochs
13
Q
Ediacaran period
A
- The final period of the Proterozoic era, before the Cambrian explosion
- First known complex multicellular life
14
Q
Cambrian Explosion
A
- Massive and sudden appearance of animal forms in the fossil record
- Both hard and soft body parts fossilized
15
Q
Burgess Shale
A
- in Yoho National Park, BC
- site of discovery for Cambrian fauna for over 125 years
- great preservation of morphology
